My OB

davidallancole · 7th September 2007, 08:59 PM

I finally found a person with a digital camera who was willing to take a picture of my baffles.

The fullrange up top is a RS 40-1271 and the two woofers in the bottom are RS 40-1024.

These are not set up even near to optimum. All three drivers on the baffle are ran in parallel. I don't have any extra amps to run it biamped yet adn i have not spent the time to run a crossover on it. You can definetly hear voice and higher frequency stuff coming out of the bottom woofers.

Anyways, here they are.

Nelson Pass · 7th September 2007, 09:31 PM

Nice piece of wood, though.

Geoff H · 7th September 2007, 10:28 PM

They are nice baffles, prettier than mine. David, this might help for a quick solution till you get set up with bi-amps.

http://www.diyaudio.com/forums/showt...22#post1296122

Are all drivers 8 ohm?

Geoff.

davidallancole · 7th September 2007, 10:48 PM

Thanks Nelson.

Yes, Geoff, all the speakers are 8 ohms. I am not sure what you are refering to in the attached post that would work as a quick solution.

Geoff H · 7th September 2007, 11:50 PM

Yeah, sorry my slip. The crossover. Wire the 2 bass drivers in parallel. I'm running a 4 ohm bass helper with a 8 ohm main.

http://www.diyaudio.com/forums/showt...95#post1282395

davidallancole · 8th September 2007, 12:02 AM

So if I am getting you right, you are saying run the two woofers in parallel and then the pair in series with the fullrange?

Geoff H · 8th September 2007, 11:36 AM

Yes, that's right. Start with 150uf shunting the bass pair. I used 3 47s in parallel, so I could replace one with a lower value to fine tune. Then you want an inductor to shunt the top driver. As a starting point, try Xl=Z of the driver at crossover.

Note the series x-o will exhibit a low z at crossover freq without the drivers connected. Also the bass driver needs to be out of phase or you will have phase cancellation at the xo.

Good luck.

Geoff.

davidallancole · 8th September 2007, 12:29 PM

Thanks

davidallancole · 14th November 2007, 06:04 PM

Would there be any benefit to removing the wings and putting the lower woofers into an H baffle or U baffle and then adding a inductor inline with the woofers to cut them off around ~260-280 Hz (the center baffle is 10.5 inches)?

I am thinking of cutting the wood for the H baffle or U baffle out of the wings and adding that to the center baffles that the speakers are all ready in.

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7th September 2007, 09:31 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Nice piece of wood, though.

7th September 2007, 10:28 PM	#3
Geoff H diyAudio Member Join Date: Oct 2006	They are nice baffles, prettier than mine. David, this might help for a quick solution till you get set up with bi-amps. http://www.diyaudio.com/forums/showt...22#post1296122 Are all drivers 8 ohm? Geoff.

7th September 2007, 10:48 PM	#4
davidallancole diyAudio Member Join Date: Nov 2005	Thanks Nelson. Yes, Geoff, all the speakers are 8 ohms. I am not sure what you are refering to in the attached post that would work as a quick solution.

7th September 2007, 11:50 PM	#5
Geoff H diyAudio Member Join Date: Oct 2006	Yeah, sorry my slip. The crossover. Wire the 2 bass drivers in parallel. I'm running a 4 ohm bass helper with a 8 ohm main. http://www.diyaudio.com/forums/showt...95#post1282395

8th September 2007, 12:02 AM	#6
davidallancole diyAudio Member Join Date: Nov 2005	So if I am getting you right, you are saying run the two woofers in parallel and then the pair in series with the fullrange?

8th September 2007, 11:36 AM	#7
Geoff H diyAudio Member Join Date: Oct 2006	Yes, that's right. Start with 150uf shunting the bass pair. I used 3 47s in parallel, so I could replace one with a lower value to fine tune. Then you want an inductor to shunt the top driver. As a starting point, try Xl=Z of the driver at crossover. Note the series x-o will exhibit a low z at crossover freq without the drivers connected. Also the bass driver needs to be out of phase or you will have phase cancellation at the xo. Good luck. Geoff.

8th September 2007, 12:29 PM	#8
davidallancole diyAudio Member Join Date: Nov 2005	Thanks

14th November 2007, 06:04 PM	#9
davidallancole diyAudio Member Join Date: Nov 2005	Would there be any benefit to removing the wings and putting the lower woofers into an H baffle or U baffle and then adding a inductor inline with the woofers to cut them off around ~260-280 Hz (the center baffle is 10.5 inches)? I am thinking of cutting the wood for the H baffle or U baffle out of the wings and adding that to the center baffles that the speakers are all ready in.